I saw the sky light up, only for a second, to see a light traveling faster than i've ever seen

To start, i've never posted on any of these types of sites before, but what I saw was unexplainable. I couldn't make out a shape or "craft" as you call it. But I was walking out to my car with my headphones in. All of a sudden the sky lit up. I remember flinching because I was expecting a loud bang from heat lightning, but it wasn't lightning. I looked up and saw a light shoot across the sky in a supersonic speed. At first, I thought it could have been a shooting star, but the crazy thing was that it left a small trail of smoke, only for a split second, and then shot off out of sight in a nano second. I watched the smoke trail dissipate into the sky in several seconds. Whatever it was, was traveling at a speed 100x faster than any plane i've witnessed. Also, the altitude couldn't have been more than a few thousand feet. I didn't hear anything, but like I said, I had headphones in.